Brake-shoe for railway-brakes.



PATENTED APR. 28, 1903.

J. PLAYER. BRAKE SHOE FOR RAILWAY BRAKES.

APPLICATION FILED FEB. 12, 1903.

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ESSES ATTORNEY No. 726,339. PATENTED APR. 28,1903.

. J. PLAYER;

BRAKE SHOE FOR RAILWAY BRAKES.

APPLICATION FILED T11R12, 1903.

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JOHN PLAYER, OF RIVER FOREST, ILLINOIS.

BRAKE-SHOE FOR RAILWAY-BRAKES.

S1?EGIFICATION forming part of Letters Patent No. 726,339, dated April28, 1903.

Application filed February 12, 1903. Serial No. 143.128. (No model.)

To aZZ whom it may concern:

Be it known that 'I, JOHN PLAYER, a citizen of the United States,residing at River Forest, in the county of Cook and State of Illinois,have inventedcertain new and useful Improvements in Brake-Shoes forRailway- Brakes, of which the following is a specification, referencebeing had therein to the accompanying drawings.

My invention relates toimprovements in brake-shoes of the composite typefor railwaybrakes, the construction of which will be fully understood bya reference to the accompanying drawings, which form a part of thisspecification, and in which- Figure l is an elevation of the face of abrake-shoe which embodies my invention. Fig. 2 is a longitudinal sectionon line A A of Fig. 1. Fig. 3 is an elevation of a steel plate used inmy construction. Fig. etis a side view of Fig. 3.

The same numeralsindicate identical parts in the several views.

The object of my device is to provide a brake'shoe of the composite typewherein the desirable qualities of a cast-iron shoe will be largelymaintained and the structural strength, durability, economy, and safetywhereof will be greatly increased in com parison to a cast-iron shoefAll of the above objects I claim to have attained in the shoe hereinshown and described, while the initial cost of same has not beenmaterially increased.

My improved brake-shoe is constructed substantially as follows: A plateof sheetsteel 1, preferably of about 8 gage, is placed in aspecially-constructed punch and forming press and a product thereproduced such as is shown in Figs. 3 and 4, the same being a sheet ofsteel somewhat shorter and narrower than the face of the shoe into whichit is to be cast. The plate is concaved longitudinally, the radius ofsaid concavitycorresponding approximately to the periphery of acar-wheel. Tongues 2 are punched from said plate and their free endscarried inwardly, so that they project into the concavity aforesaid. Atthe center of plate 1 two clips or ears 3 are formed, which projectoutwardly from the convex side and in the opposite direction fromtongues 2. Holes 4 are formed in the clips 3 for the pn rposehereinafter set forth. The plate thus formed is placed in the mold of abrake-shoe, and a foundry metal, preferably cast.iron, is castthereabout, the plate 1 occupying a position much nearer the back of theshoe than the face and with the ends of tongues 2 appearing at face 5,Fig, 2, thus forming the composite face. Clips 3 are surrounded by thecast-iron, which forms the attaching-lug 6 of the shoe, and thus it willbe readily understood that the plate 1 forms a perfect bond for everyportion of my shoe, and if the castiron should become fractured to avery con siderable extent it is still all held firmly together by thesteel plate, and if the cast-iron in the attaching-lug 6 should bewholly severed from the body of the shoe by fracture the shoe wouldstill be securely held to the brake-head by the steel clips 3, the holes4 in said clips 3 being for the purpose of receiving the attaching-key.

It will be readily seen that the shape and location of the tongues 2might be greatly varied without departing from the spirit or scope of myinvention and that plate 1 could be in any way mutilated provided thatthe metal formed by such mutilations be carried away from the face ofthe plate sufficiently far to cause it to appear at the face of thefoundry metal and provided, further, that a portion of said plateprojects in such a man nor as to cause it to become incorporated withthe foundry metal in the attaching-lug in substantially the manner shownand for the purpose set forth.

Having thus described my device, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a composite brake-shoe for railwaybrakes, a mutilated steelplateof substantially the width and length of-the shoe, with foundry metalcast thereabout, inthe form of a brake-shoe, a portion of the projectingI said shoe, and other portions thereof are em- 10 metal caused by themutilation aforesaid be- I bodied in the attaching-lug. ing exposed atthe concave face of the shoe, In testimony whereof I affix my signatureand a portion thereof projecting, so as to be I in presence of twowitnesses. incorporated in the attaching-lug. T

2. A brake-shoe for railway-brakes, con- JOHN PLAX sistiug of amutilated steel plate, inter-cast Witnesses: with a foundry metal, insuch a manner that A. F. MILLER, portions of said plate appear at theface of GEO. C. MILLER.

